linux-kernel - Re: [PATCH] ublk: fix narrowing warnings in UAPI header

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aFiwn2v9VGWBdd8t@fedora>
Date: Mon, 23 Jun 2025 09:40:47 +0800
From: Ming Lei <ming.lei@...hat.com>
To: Caleb Sander Mateos <csander@...estorage.com>
Cc: Uday Shankar <ushankar@...estorage.com>, linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ublk: fix narrowing warnings in UAPI header

On Sat, Jun 21, 2025 at 10:28:41AM -0600, Caleb Sander Mateos wrote:
> When a C++ file compiled with -Wc++11-narrowing includes the UAPI header
> linux/ublk_cmd.h, ublk_sqe_addr_to_auto_buf_reg()'s assignments of u64
> values to u8, u16, and u32 fields result in compiler warnings. Add
> explicit casts to the intended types to avoid these warnings. Drop the
> unnecessary bitmasks.
> 
> Reported-by: Uday Shankar <ushankar@...estorage.com>
> Signed-off-by: Caleb Sander Mateos <csander@...estorage.com>
> Fixes: 99c1e4eb6a3f ("ublk: register buffer to local io_uring with provided buf index via UBLK_F_AUTO_BUF_REG")

Reviewed-by: Ming Lei <ming.lei@...hat.com>

thanks,
Ming